Meadowsweet is an herb in the rose family. For centuries, it’s been used in traditional medicine to alleviate joint pain, heartburn, and more. It contains many compounds thought to have anti-inflammatory effects in your body, including salicylates and tannins
 
Compounds in meadowsweet that may have beneficial properties include flavonoids, ellagitannins, and salicylic acid. These compounds, among others, may have antioxidant and anti-inflammatory effects.
Historically, it has been used as a diuretic and to treat inflammatory conditions, including joint pain and gout.
Test tube and animal studies suggest meadowsweet has anti-inflammatory effects, but research has not yet found that these effects translate to improvements in inflammatory conditions like joint pain or acne in humans
Due to a lack of research, there is currently no standardized dosage of meadowsweet, nor any information on possible side effects. If you’re considering trying it, speak with a healthcare professional first.